TK 56433-5-MM-EN
15
Electrical Components
Note:
Disconnect components from the unit circuit to check resistance.
Component
Current Draw (Amps) at 12.5
Vdc
Resistance — Cold (Ohms)
Fuel Solenoid
Pull-in Coil
Hold-in Coil
35 to 45
0.5 or 1.0
0.2 to 0.3
24 to 29
High Speed (Throttle) Solenoid
2.9
4.3
Air Heater
60 to 70*
0.14
Damper Gear Motor
2.5 to 3.1
4.0 to 5.0
Pilot Solenoid
0.7
17.0
Electronic Throttling Valve
Coil A (Red [EVA] and Blue [EVB]
Wires)
-
20 to 35
Coil B (Black [EVC] and White
[EVD] Wires)
-
20 to 35
Hot Gas Bypass Valve
1.5
8.0
Starter Motor
350 to 475**
* Typical current draw during preheat.
** On-the-engine cranking check. Bench test is approximately 140 amps.